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  5. Work and energy

9th Class Science Work and energy Question Bank Work Power and Energy Conceptive Subjective Problems

  • question_answer
    What will be the potential energy of a body of mass 1 kg kept at a height of 5 m. (Take \[\text{g}=\text{1}0\text{m}{{\text{s}}^{-\text{2}}}\])

    Answer:

    Given,   \[m=1\,kgh=5\,m\]                 \[g=10\,\,m/{{s}^{2}}P.E.=?\] We know, \[P.E.=mgh\] \[\therefore P.E.=1\times 10\times 5=50\,J\]


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